66cbf116f14af4d7fee2f25cc955e95d47d79201c6821909ea1f2660a1be7a6e

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-05-2024 12:25

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General

Target

2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe
Size

45KB
MD5

6bf4a8f9f34a7726a51b610c39e3e8a6
SHA1

d1171a202c15c12017535c67f183ce32409aea7d
SHA256

66cbf116f14af4d7fee2f25cc955e95d47d79201c6821909ea1f2660a1be7a6e
SHA512

f89b563bc9bd2f8be01bfe816c50f7ff3754c97a5fe28d2d04338cf25480062dc181556287ab67ff173bdb3c2c1b2bc77429f637d751030a189970489f0eda3b
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPhu:P6QFElP6k+MRQMOtEvwDpjBQpVXKu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2768-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000014e3d-11.dat	CryptoLocker_rule2
behavioral1/memory/2768-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3052-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2768-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000014e3d-11.dat	CryptoLocker_set1
behavioral1/memory/2768-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3052-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3052	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2768	2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 3052	2768	2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe	28
PID 2768 wrote to memory of 3052	2768	2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe	28
PID 2768 wrote to memory of 3052	2768	2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe	28
PID 2768 wrote to memory of 3052	2768	2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_6bf4a8f9f34a7726a51b610c39e3e8a6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
46KB

MD5
4cdd3c7557a7c670ecf3494aa3b1d426

SHA1
74770db95b11055b786940ffdc13b0a4ccbde82f

SHA256
ac314c9ddfcd8a3152bd04f62bdf75b48d7bad6aaa9d693fe99d8c3ac119a252

SHA512
c67a533af37739e6108329089ea8d2b47893bb991f75e3886e42a55a6a47bfb30de36452b18b88f5b9d1e77dbb0beb70aa8af54f1ea3da8ecb95426341e0923e

Download Submit
memory/2768-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2768-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2768-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2768-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2768-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3052-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3052-17-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3052-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download